Divers find sunken German U-boat off Massachusetts coast

This sonar image provided by GK Consulting & AWS Expeditions/Joe Mazraani, shows a World War II-era German submarine U-550, found by a team of explorers Monday, July 23, 2012, on the floor of the Atlantic Ocean 70 miles south of Nantucket Island, Mass.

NBC News staff and wire services reports: Divers have discovered a World War II-era German submarine nearly 70 years after it sank under withering U.S. attack in waters off Nantucket. The U-550 was found Monday by a privately funded group organized by New Jersey lawyer Joe Mazraani.